A control method and system of a jet air duct multi-connected air conditioner and the jet air duct multi-connected air conditioner

Abstract

The application discloses a kind of control method, system and jet flow duct multi-connected machine of jet flow duct multi-connected machine, method includes: obtaining the position information and image recognition information of each jet flow duct indoor unit, obtain the space information of space;The return air temperature and humidity of each jet flow duct indoor unit and the setting parameter of wire controller are obtained;According to the setting parameter of wire controller, the return air temperature and humidity of each jet flow duct indoor unit and the space information of space, determine the target operating mode of each jet flow duct indoor unit is one of cooling demand mode, dehumidification and temperature rise demand mode, heating demand mode;Control each jet flow duct indoor unit and execute target operating mode.The application is applicable to large space building site, can satisfy the cooling, dehumidification and temperature rise, dehumidification and temperature rise and heating functions of large space, equipment cost is low, and operating energy consumption is low.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air conditioners, and particularly relates to a control method and system of a jet air duct multi-split air conditioner and the jet air duct multi-split air conditioner. BACKGROUND

[0002] With the improvement of living standards, the building level is getting higher and higher, and large space buildings are gradually becoming an important part of buildings. The traditional water system air conditioner is relatively complex to arrange and install in simple high buildings, and needs a dedicated machine room, increasing the building cost and installation cost. However, high buildings also have cooling and heating needs, especially in the transition season, the southern region is humid, and dehumidification is needed but the temperature is not high, and dehumidification without temperature reduction is needed.

[0003] The traditional water system air conditioner uses an air conditioner box, part of the water coil uses cold water for cooling and dehumidification, and then uses electric heating to warm up. Although this technology is mature, it has high cost and high energy consumption. In addition, for some household multi-split air conditioner products, the existing technology uses three-pipe control, but the use condition of three-pipe control is only in the transition season. The design of this redundant indoor and outdoor unit form can be tolerated by the manufacturing cost of household applications, but for industrial or large space, the cost of this design is relatively high, and it is difficult to apply. SUMMARY

[0004] The purpose of the present application is to overcome the shortcomings of the prior art, provide a control method and system of a jet air duct multi-split air conditioner and the jet air duct multi-split air conditioner, which is suitable for large space building sites and can meet the functions of large space cooling, dehumidification without temperature reduction, dehumidification and heating, etc. The equipment cost is low, and the operation energy consumption is low.

[0005] The present application provides the following technical solutions:

[0006] In a first aspect, a control method of a jet air duct multi-split air conditioner is provided, comprising:

[0007] Obtaining position information and image recognition information of each jet air duct indoor unit to obtain space information of the space;

[0008] Obtaining return air temperature and humidity of each jet air duct indoor unit and setting parameters of a line controller;

[0009] According to the setting parameters of the line controller, the return air temperature and humidity of each jet air duct indoor unit, and the space information of the space, determining the target operation mode of each jet air duct indoor unit as one of a cooling demand mode, a dehumidification and heating demand mode, and a heating demand mode;

[0010] Controlling each jet air duct indoor unit to start and execute the target operation mode.

[0011] Further, when the line controller is set to cooling and the difference between the set temperature and the return air temperature of the jet air duct indoor unit is > 3℃, it is determined that the target operation mode of each jet air duct indoor unit is a cooling demand mode;

[0012] When the line controller is set to cooling and the difference between the set temperature and the return air temperature of the jet air duct indoor unit is ≤ 3℃, and the difference between the set humidity and the return air humidity of the jet air duct indoor unit is > 15℃, it is determined that the target operation mode of each jet air duct indoor unit is a dehumidification and temperature increase demand mode;

[0013] When the line controller is set to heating, it is determined that the target operation mode of each jet air duct indoor unit is a heating demand mode.

[0014] Further, the cooling demand mode includes:

[0015] controlling each jet air duct indoor unit to perform cooling operation;

[0016] controlling the air outlet direction of each jet air duct indoor unit to be adjusted to the space center point of the space as the target, and then to be adjusted eccentrically to form a rotating flow of air outlet.

[0017] Further, the dehumidification and temperature increase demand mode includes:

[0018] determining the number of jet air duct indoor units for cooling and dehumidification operation and heating operation according to the dehumidification and temperature increase demand;

[0019] controlling the jet air duct indoor units for cooling and dehumidification operation and the jet air duct indoor units for heating operation to be arranged alternately;

[0020] controlling the air outlet direction of each jet air duct indoor unit to be adjusted to the space center point of the space as the target, and then adjusting the air outlet direction of the jet air duct indoor units for cooling and dehumidification operation to be above the space center point, and adjusting the air outlet direction of the jet air duct indoor units for heating operation to be below the space center point.

[0021] Further, the heating demand mode includes:

[0022] controlling each jet air duct indoor unit to perform heating operation;

[0023] controlling the air outlet direction of each jet air duct indoor unit to be adjusted to the air outlet direction with the shortest distance from the ground as the target.

[0024] In a second aspect, a control system of a jet air duct multi-connected air conditioner is provided, comprising:

[0025] a first information acquisition module for acquiring position information and image recognition information of each jet air duct indoor unit to obtain space information of the space;

[0026] The second information acquisition module is configured to acquire the return air temperature and humidity of each jet air duct indoor unit and the set parameters of the wire controller.

[0027] The target operation mode determination module is configured to determine the target operation mode of each jet air duct indoor unit as one of a cooling demand mode, a dehumidification and temperature increase demand mode, and a heating demand mode according to the set parameters of the wire controller, the return air temperature and humidity of each jet air duct indoor unit, and the space information of the space.

[0028] The control module is configured to control each jet air duct indoor unit to start and execute the target operation mode.

[0029] In a third aspect, a jet air duct multi-split air conditioner is provided, which comprises an outdoor unit, a plurality of jet air duct indoor units, a wire controller, and a controller.

[0030] Further, the jet air duct indoor unit comprises a body, a return air inlet arranged at the rear end of the body, and an electrically-driven universal air outlet and an image recognition camera arranged at the front end of the body.

[0031] Further, the jet air duct indoor unit further comprises an electric control board arranged on the body, and the electric control board is provided with a wireless communication function.

[0032] Further, the jet air duct indoor unit further comprises a gas pipe connecting pipe and a liquid pipe connecting pipe arranged on the body, and the gas pipe connecting pipe and the liquid pipe connecting pipe are connected to the outdoor unit, respectively.

[0033] Compared with the prior art, the jet air duct multi-split air conditioner provided by the application has the following advantages:

[0034] The control method of the jet air duct multi-split air conditioner provided by the application determines the target operation mode of each jet air duct indoor unit according to the set parameters of the wire controller, the return air temperature and humidity of each jet air duct indoor unit, and the space information of the space, and controls each jet air duct indoor unit to start and execute the target operation mode. When the cooling demand mode is executed, the temperature of a large space is uniformly and rapidly decreased. When the dehumidification and temperature increase demand mode is executed, the dehumidification and temperature increase capacity in the transition season is realized, the environmental comfort of the large space is improved, no additional cost is needed, the mutual adjustment between the jet air duct indoor units is performed, the waste of energy caused by electric heating is avoided, and the equipment investment of the three-pipe unit is avoided. When the heating demand mode is executed, the rapid heating in winter of a large space is realized. Therefore, the jet air duct multi-split air conditioner provided by the application can be applied to a large space building site, is simple to install, has low equipment cost, and has low operation energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a flowchart of the control method of the jet air duct multi-splitter of the embodiment of the present application;

[0036] Figure 2 is a structural schematic diagram of the jet air duct indoor unit and the wire controller in the embodiment of the present application;

[0037] Figure 3 is an application environment schematic diagram of the refrigeration demand mode in the embodiment of the present application;

[0038] Figure 4 is an application environment schematic diagram of the dehumidification and temperature rising mode in the embodiment of the present application;

[0039] In the figure, 1 is an image recognition camera, 2 is an electric control board, 3 is an electric universal air outlet, 4 is an air outlet temperature and humidity sensor, 5 is an air return temperature and humidity sensor, 6 is a gas pipe connecting pipe, 7 is a liquid pipe connecting pipe, 8 is a wire controller, 9 is an outdoor unit, 10 is a jet air duct indoor unit, 11 is a space center, and 12 is a machine body. DETAILED DESCRIPTION

[0040] The present application will be further described below in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and cannot be used to limit the protection scope of the present application.

[0041] It should be noted that in the description of the present application, the terms "front", "back", "left", "right", "up", "down", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and not for requiring the present application to be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0042] Embodiment 1

[0043] As shown in the figure, the present embodiment provides a control method of a jet air duct multi-splitter, which comprises: Figure 1

[0044] Step one, control the unit to start, read the number of jet air duct indoor units in the space through the communication function, and record the number as n. When n = 1, it means that there is only one jet air duct indoor unit in the space, and then the subsequent function will not be activated, and it is only a one-to-one jet air duct multi-splitter; when n > 1, the subsequent function is activated, and step two is entered.

[0045] Step two, start the image recognition system, identify the position information and other image recognition information of each jet air duct indoor unit, record the jet air duct indoor unit with the highest position as x1, and then record them as x2, x3…xn according to the position height. ​

[0046] Step three, obtain the position information and image recognition information of each jet air duct indoor unit collected through wireless communication, and obtain the basic space information of the space, such as the space center point of the space, and then store it.

[0047] Step four, obtain the return air temperature and humidity of each jet air duct indoor unit and the set parameters of the wire controller.

[0048] Step five, according to the set parameters of the wire controller, the return air temperature and humidity of each jet air duct indoor unit, and the space information of the space, determine the target operation mode of each jet air duct indoor unit as one of the cooling demand mode, the dehumidification and temperature rise demand mode, and the heating demand mode.

[0049] Step six, control each jet air duct indoor unit to start and execute the target operation mode.

[0050] Case 1, when the wire controller is set to cooling and the set temperature is greatly different from the return air temperature of the jet air duct indoor unit (such as > 3℃), determine the target operation mode of each jet air duct indoor unit as the cooling demand mode.

[0051] The cooling demand mode specifically includes:

[0052] (1) control each jet air duct indoor unit to perform cooling operation;

[0053] (2) control the air outlet direction of each jet air duct indoor unit to be adjusted to the space center point of the space as the jet direction, and then adjust the eccentricity, the position is clockwise to the space center point by a certain angle, the eccentric angle calculation method is 360° / 2n (i.e. space center point circle center angle division), flat blowing, using angle to form rotational flow and cold air natural drop to realize large space temperature uniform and rapid drop, as shown in Figure 3

[0054] Case 2, when the wire controller is set to cooling, the set temperature is not greatly different from the return air temperature of the jet air duct indoor unit (such as ≤ 3℃), and the set humidity is greatly different from the return air humidity of the jet air duct indoor unit (such as > 15℃), the dehumidification capacity needs to be increased, but if all jet air duct indoor units are opened for cooling and dehumidification, the overall large space temperature will be lowered, and the space temperature will quickly reach the set temperature, and the dehumidification capacity cannot be reduced, so the target operation mode of each jet air duct indoor unit is determined as the dehumidification and temperature rise demand mode.

[0055] The dehumidification and temperature rise demand mode specifically includes:

[0056] (1) calculate the load required for temperature rise and the load required for dehumidification;

[0057] When the load required for temperature rise / dehumidification load > 1, it means that the heating is needed, then

[0058] ​

[0059] Based on the heating energy requirement, determine that a jet duct indoor units will be used for heating operation, and na jet duct indoor units will be used for cooling and dehumidification operation.

[0060] When the ratio of the load required for heating to the load required for dehumidification is less than or equal to 1, it indicates that the energy demand should be biased towards dehumidification.

[0061]

[0062] Based on the dehumidification energy requirement, b jet duct indoor units will be used for cooling and dehumidification, and nb jet duct indoor units will be used for heating.

[0063] (2) The jet duct indoor units for cooling and dehumidification and the jet duct indoor units for heating are arranged alternately to form an array arrangement for dehumidification and heating.

[0064] (3) Adjust the air outlet direction of each jet duct indoor unit to be centered on the center of the space, without making any eccentric adjustments. Then, adjust the air outlet direction of the jet duct indoor unit in cooling / dehumidifying operation above the center of the space, and adjust the air outlet direction of the jet duct indoor unit in heating operation below the center of the space (e.g., ...). Figure 4 As shown, the left side represents the cooling and dehumidification operation, and the right side represents the heating operation.

[0065] By utilizing the convection of warm and cool air, a uniform temperature can be measured at the wired controller. Through the interaction of cooling, dehumidification, and heating, large spaces will not experience insufficient dehumidification, and both units will operate at high efficiency, with a cooling index above 3.2 and a heating index above 3.0. This results in significantly greater energy savings compared to electric heating and a substantial reduction in equipment costs compared to three-pipe chillers or condensing reheat chillers.

[0066] Scenario 3: The wired controller is set to heating mode, and the target operating mode of each jet duct indoor unit is set to the heating demand mode.

[0067] Heating demand patterns specifically include:

[0068] (1) Control each jet air duct indoor unit to operate in heating mode;

[0069] (2) Considering that hot air is difficult to reach the ground, the air outlet direction of each jet duct indoor unit is adjusted to the air outlet direction with the shortest distance from the ground, so as to fully jet the air towards the ground, thereby demonstrating the advantages of the jet vent.

[0070] Step seven, the image recognition system is started again to identify the area where people are concentrated in the space, obtain the position information of the area where people are concentrated, and offset the center point of the space to the area where people are concentrated, so that the area where people are concentrated is preferentially cooled and heated, and the comfort is improved.

[0071] Embodiment 2

[0072] The embodiment provides a control system of a jet air duct multi-connected machine, comprising:

[0073] A first information acquisition module is configured to acquire position information and image recognition information of each jet air duct indoor unit, and obtain space information of a space;

[0074] A second information acquisition module is configured to acquire return air temperature and humidity of each jet air duct indoor unit and set parameters of the wire controller;

[0075] A target operation mode determination module is configured to determine a target operation mode of each jet air duct indoor unit as one of a refrigeration demand mode, a dehumidification and temperature increase demand mode and a heating demand mode according to the set parameters of the wire controller, the return air temperature and humidity of each jet air duct indoor unit and the space information of the space;

[0076] A control module is configured to control each jet air duct indoor unit to start and execute the target operation mode.

[0077] Embodiment 3

[0078] As shown in Figures 2-4 The embodiment provides a jet air duct multi-connected machine, comprising an outdoor unit 9, a plurality of jet air duct indoor units 10, a wire controller 8 and a controller, the jet air duct indoor units, the outdoor unit and the wire controller are connected to the controller, and the controller is configured to execute the control method of the jet air duct multi-connected machine described in Embodiment 1.

[0079] The jet air duct indoor unit comprises a body 12, a return air inlet arranged at a rear end of the body 12, an electrically-driven universal air outlet 3 arranged at a front end of the body 12 and an image recognition camera 1. A return air temperature and humidity sensor 5 is arranged at the return air inlet, and is configured to measure the temperature and humidity of return air; the electrically-driven universal air outlet 3 is configured to adjust the direction of outlet air; an outlet air temperature and humidity sensor 4 is arranged at the electrically-driven universal air outlet 3, and is configured to measure the temperature and humidity of outlet air; and the image recognition camera 1 is configured to obtain position information and other image recognition information of each jet air duct indoor unit 10.

[0080] The jet pipe indoor unit further comprises an electric control board 2 arranged on the machine body 12, the electric control board 2 is connected with the wire controller 8, the electric control board 2 is provided with wireless communication function and is used for communicating with the outdoor unit 9 and the controller; the wire controller 8 is provided with a temperature and humidity sensor.

[0081] The above only describes the preferred embodiments of the present application, and it should be noted that those skilled in the art can make several improvements and modifications without departing from the technical principles of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A control method for a jet duct multi-split air conditioning system, characterized in that, include: Obtain the location information and image recognition information of each indoor unit in the jet duct to obtain the spatial information of the space in which they are located; Obtain the return air temperature and humidity and the set parameters of the wired controller for each jet duct indoor unit; Based on the settings of the wired controller, the return air temperature and humidity of each jet duct indoor unit, and the spatial information of the space, the target operating mode of each jet duct indoor unit is determined to be one of the following: cooling demand mode, dehumidification and heating demand mode, or heating demand mode. Control the indoor units of each jet air duct to start up and execute the target operating mode; The cooling demand patterns include: Control the indoor units of each jet air duct to operate in a cooling mode; The air outlet direction of each jet duct indoor unit is adjusted to be oriented with the center point of the space as the jet direction, and then an eccentric adjustment is made to make the air outlet form a vortex. The dehumidification and heating demand modes include: The number of jet duct indoor units for both cooling / dehumidification and heating operations is determined based on the energy requirements for dehumidification and heating. The jet duct indoor units controlling cooling and dehumidification and the jet duct indoor units controlling heating are arranged alternately. Adjust the air outlet direction of each jet duct indoor unit to be oriented towards the center point of the space. Then, adjust the air outlet direction of the jet duct indoor unit in cooling and dehumidification operation to be above the center point of the space, and adjust the air outlet direction of the jet duct indoor unit in heating operation to be below the center point of the space.

2. The control method for a jet duct multi-split air conditioner according to claim 1, characterized in that, When the wired controller is set to cooling, and the difference between the set temperature and the return air temperature of the jet duct indoor unit is greater than 3°C, the target operating mode of each jet duct indoor unit is determined to be the cooling demand mode. When the wired controller is set to cooling, and the difference between the set temperature and the return air temperature of the jet duct indoor unit is ≤3℃, and the difference between the set humidity and the return air humidity of the jet duct indoor unit is >15%RH, the target operating mode of each jet duct indoor unit is determined to be the dehumidification and heating demand mode. When the wired controller is set to heating mode, the target operating mode of each jet duct indoor unit is determined to be the heating demand mode.

3. The control method for a jet duct multi-split air conditioner according to claim 1, characterized in that, The heating demand modes include: Control the indoor units of each jet air duct to operate in heating mode; Adjust the air outlet direction of each jet duct indoor unit to the direction with the shortest distance from the ground.

4. A control system for a jet duct multi-split air conditioning unit, characterized in that, include: The first information acquisition module is used to acquire the location information and image recognition information of each jet duct indoor unit to obtain the spatial information of the space in which it is located. The second information acquisition module is used to acquire the return air temperature and humidity of each jet duct indoor unit and the setting parameters of the wired controller; The target operating mode determination module is used to determine the target operating mode of each jet duct indoor unit as one of the following: cooling demand mode, dehumidification and heating demand mode, based on the set parameters of the wired controller, the return air temperature and humidity of each jet duct indoor unit, and the spatial information of the space. The control module is used to control the start-up of each jet duct indoor unit and execute the target operating mode; The cooling demand patterns include: Control the indoor units of each jet air duct to operate in a cooling mode; The air outlet direction of each jet duct indoor unit is adjusted to be oriented with the center point of the space as the jet direction, and then an eccentric adjustment is made to make the air outlet form a vortex. The dehumidification and heating demand modes include: The number of jet duct indoor units for both cooling / dehumidification and heating operations is determined based on the energy requirements for dehumidification and heating. The jet duct indoor units controlling cooling and dehumidification and the jet duct indoor units controlling heating are arranged alternately. Adjust the air outlet direction of each jet duct indoor unit to be oriented towards the center point of the space. Then, adjust the air outlet direction of the jet duct indoor unit in cooling and dehumidification operation to be above the center point of the space, and adjust the air outlet direction of the jet duct indoor unit in heating operation to be below the center point of the space.

5. A jet duct multi-split air conditioning system, characterized in that, The system includes an outdoor unit, multiple jet duct indoor units, a wired controller, and a control unit. The jet duct indoor units are connected to the outdoor unit and the wired controller, respectively. The jet duct indoor units, the outdoor unit, and the wired controller are connected to the control unit, respectively. The control unit is used to execute the control method of the jet duct multi-split air conditioner as described in any one of claims 1 to 3.

6. The jet duct multi-split air conditioning system according to claim 5, characterized in that, The jet tube indoor unit includes a body, a return air vent located at the rear of the body, and an electric universal air vent and an image recognition camera located at the front of the body. A return air temperature and humidity sensor is installed at the return air vent, and an outlet air temperature and humidity sensor is installed at the electric universal air vent.

7. The jet duct multi-split air conditioning system according to claim 5, characterized in that, The jet tube indoor unit also includes an electronic control board mounted on the unit body, the electronic control board having wireless communication capabilities, and the wired controller having a temperature and humidity sensor.

8. The jet duct multi-split air conditioning system according to claim 5, characterized in that, The jet pipe indoor unit also includes an air pipe connection pipe and a liquid pipe connection pipe installed on the unit body, and the air pipe connection pipe and the liquid pipe connection pipe are respectively connected to the outdoor unit.

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